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Radeon HD 4870 Mac Edition

TeraScale Radeon HD 4000 Series Gaming Desktop GDDR5 2009

Key Metrics

Launch Date: 2009-01-06
Stream Processors: 800
Memory: 512 MB GDDR5
Memory Bandwidth: 108.8 GB/s
TDP/TBP: 150 W
Interface: PCIe 2.0 x16

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GPU Specs

What do these fields mean?

Identity
Entry Type	Reference GPU
Official Name	ATI Radeon HD 4870 Mac Edition
Architecture	TeraScale
Launch Date	2009-01-06
Core Specs
GPU Die	RV770
Chip Variant / Package	HFCBGA-1492
Process Node	TSMC 55 nm
Transistor Count	0.96 billion
Die Size	256 mm²
Stream Processors	800
TMUs	40
ROPs	16
Base Clock	750 MHz
Boost Clock	750 MHz
Pixel Fillrate	12 GP/s
Texture Fillrate	30 GT/s
FP32 Throughput	1.2 TFLOPS
FP64 Throughput	0.24 TFLOPS
Memory
Memory Size	512 MB
Memory Type	GDDR5
Memory Bus Width	256-bit
Memory Clock	850 MHz
Memory Bandwidth	108.8 GB/s
L2 Cache	0.25 MB
L1 Cache	16 KB
Board and Display
TDP / TBP	150 W
Recommended PSU	450 W
Interface	PCIe 2.0 x16
Display Outputs	1x DVI, 1x mini-DisplayPort 1.0
Slot Width	Dual-slot
Card Length	250 mm
Software
Shader Model	4.1
DirectX Support	DirectX 10.1
OpenGL Support	OpenGL 3.3
OpenCL Support	OpenCL 1.1

Sources

Independent reference sources

TechPowerUp GPU SpecsOpen source